What does HRESULT 0x803100B0 (FVE_E_EDRIVE_BAND_IN_USE) mean?

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

The drive cannot be managed by BitLocker because the drive's hardware encryption feature is already in use.

Previous	Next
FVE_E_EDRIVE_NO_FAILOVER_TO_SW	FVE_E_EDRIVE_DISALLOWED_BY_GP

FVE_E_EDRIVE_BAND_IN_USE

Where the operation stops

The value 0x803100B0, named FVE_E_EDRIVE_BAND_IN_USE, is returned when the self-encrypting drive band is already owned or activated by another hardware-encryption configuration. It belongs to the hardware-encrypted drive negotiation part of BitLocker rather than to generic file I/O.

Note: If policy permits software fallback, verify the final method explicitly. When diagnosing this result, remember: A failed hardware dry run can otherwise leave an administrator assuming protection that never started. Note: Hardware-encrypted drives add firmware, storage-driver and drive-security state below the normal BitLocker volume provider. When diagnosing it, remember: BitLocker can reject the hardware path before conversion starts, and policy may or may not permit a fallback to software encryption.

Question	What to verify
Which object failed?	The exact volume GUID, protector GUID, certificate or API target supplied by the caller.
Which state matters?	drive security protocol state, band ownership, vendor management history, BitLocker hardware status and firmware tools used.
What is the nearest false lead?	a volume merely unlocked by BitLocker; band ownership is persistent device state below the filesystem.

Build a minimal diagnostic record

record drive security protocol state, band ownership, vendor management history, BitLocker hardware status and firmware tools used. Keep the full HRESULT and the first method that returned it because later cleanup calls can report a different state.
capture manage-bde -status and the protector inventory for the exact volume GUID, not only the drive letter, because letters can change in WinRE, clusters and deployment environments.
Export BitLocker operational events for the result failure and note the boot session, caller identity and management source; that evidence separates this BitLocker condition from a generic access or storage error.

Change only the failed prerequisite

determine the existing band owner and securely revert or migrate it using supported vendor/BitLocker procedures before reprovisioning. Collect a fresh state snapshot and issue a single retry from the same management layer.

manage-bde -status
powershell -NoProfile -Command "Get-CimInstance -Namespace root/cimv2/security/MicrosoftVolumeEncryption -Class Win32_EncryptableVolume"

Do not delete all key protectors, clear a TPM, reformat a partition or decrypt the volume as a generic response to this result; those actions affect different trust layers and can destroy the easiest recovery route.

The drive security band already has an owner

Self-encrypting drives maintain security-band state below partitions and filesystems. A previous operating system, vendor utility or provisioning attempt can activate the band before BitLocker reaches it. Reformatting NTFS or deleting partitions does not necessarily release that hardware ownership.

Identify the existing owner and use a supported secure-revert or migration procedure with full data-loss planning. Do not issue vendor reset commands until recovery and backup requirements are satisfied.

State checks specific to the result

Checkpoint	How to interpret it for it
Before the call	Record the target identity and the pre-call hardware-encrypted drive negotiation state. The decisive boundary is that the self-encrypting drive band is already owned or activated by another hardware-encryption configuration.
At failure	Preserve drive security protocol state, band ownership, vendor management history, BitLocker hardware status and firmware tools used. This proves whether this result came from BitLocker itself or from a wrapper translating another result.
After correction	Determine the existing band owner and securely revert or migrate it using supported vendor/BitLocker procedures before reprovisioning. The request should then advance without removing an unrelated recovery route.
After reboot or remount	Recheck protection, conversion and lock state for it; a successful management call is incomplete if the next boot cannot unlock the volume.

Verification after the change

Success means more than the absence of a dialog. Confirm that the condition represented by this result now matches the intended design, that the protector inventory has not lost an independent recovery route, and that the next reboot or remount can unlock the volume. If the request advances to another HRESULT, record both values in order because that transition reveals the next unmet prerequisite.

Official documentation

Reference set for it:

Looking for a different code? Search another status or error code.